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MANAGEMENT RESERVES OF MINING OPERATIONS MODE IN OPEN PIT MINING OF STEEPLY DIPPING MINERAL OCCURENCES
Abstract
A regulation of the mining operations mode during a new phase of open pit mining deep lying minerals through implementation of temporary non-operating open pit edges on many deep open pit mines made it difficult to extract minerals. Innovative technologies of working zones development along steep open pit edges have been tested at the pre-design stage with comparison of the obtained mining schedules with the design schedules based on the analysis of methods of controlling mining operations mode and their existing state on deep open pit mines of Kazakhstan. Such tasks were performed for round shaped and extended open pit fields of mined and perspective ore and coal mines with the use of a central-circular, single and double open pit edge longitudinal deepening systems of mining. The new design of the working area along the steep open pit edges assumes the implementation of technologies for mining high pit banks from two levels of an excavator position by cross panels with the construction of temporary opening workings on the sides of the open pit field with the orientation of the operational front of the working zone perpendicular to the operational front of the pit banks of steep open pit edges. Optimization (reduction) of the required volumes of overburden excavation is achieved by approximating the slope of the operating open pit edge to its stable values on studied mineral occurrences.
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References10
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